{ fetchurl }:

fetchurl {
  url = "https://github.com/commercialhaskell/all-cabal-hashes/archive/90b24a91103dca4f0df6cb28cecb205a7d7ab650.tar.gz";
  sha256 = "1zfj8c6s9icqg83ycfvd150s4jd07ccbjg2w2mn10rx5ng76mn53";
}